Herbs perennial. Roots fibrous, subequally thick. Stems 28--60 cm, 4--5 mm thick, strigose, simple or few branched. Basal leaf withering at anthesis; blade lanceolate-linear, 7--15 × 0.3--0.5(--0.7) mm, strigose, Stem leaves sessile, amplexicaul, lanceolate-linear, 7--15 × 0.3--0.5(--0.7) mm, base attenuate, margin entire, apex attenuate. Flowers usually solitary, terminal, 1.7--2.5 cm in diam. Receptacle glabrous. Sepals 5, elliptic, 4--7 mm, abaxially densely strigose. Petals 5, obovate, 8--12 × 5--8 mm, nectary pit without a scale, apex rounded. Stamens numerous; anthers ellipsoid. Aggregate fruit subglobose, ca. 5 mm in diam. Achene obliquely obovoid, ca. 1.8 × 1 mm, glabrous; style persistent, ca. 0.4 mm. Fl. Jul--Sep.
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